Question

hey friends help me....

describe how the human ear
works.please explain briefly on CBSE class 9

Answer 1

the year is an important organ of human body we hear sound because of our ear when sound waves fall on the ear drum it vibrate this vibration are converted into the electrical signal which travel to the Brain through nerve the ear can be divided into three parts ...

1. Outer ear or pinna ..

the outer ear collects the sound waves the and pass them through a tube to a cavity in the Middle ear it's peculiar funnel like shape help to collect and pass sound into the middle ear

2 . Middle ear .......

there is a thin membrane in the cavity of the middle ear called the eardrum when a compression is in a sound waves reach the eardrum the pressure outside in increase and it gets pushed in word opposite happen when a rare fraction is there the pressure outside decrease and the membrane get full out where the sound waves cause vibration of the membrane ..

3 . Inner ear ........

the auditory nerve connect the inner ear to the Brain the inner ear has a structure resembling the shell of a snail it is called a call to the nation coming from the membrane and convert them into the electrical signal which are sent to the Brain through the nerve the brain and the signal ....


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